Off-the- road pneumatic tire with specified bead area design

Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube

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152539, 152544, 152549, 152555, B60C 900, B60C 908, B60C 1502, B60C 15024

Patent

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056225768

ABSTRACT:
An improved off-the-road pneumatic tire designed to be mounted on an associated design rim having a flange portion is described. The rim flange has an axially inward surface contacting the axially outward portion of the bead area of the tire. Each bead portion has a surface contacting a radially inner portion of the rim flange. The surface and the flange initially cease contact and diverge from one another at a location in the cross-section of the tire and rim and in a region of the flange in which a line L1 tangent to the flange surface and passing through the axis forms an angle greater than 0.degree. and less than or equal to 15.degree. with a radial line L2 passing through the point of divergence and perpendicular to the axis. The tire has a steel reinforced radial ply which extends between and wraps about each bead. The ply has an inflection point located radially between a radially outward surface of the bead and a radially outward surface of the rim flange portion.

REFERENCES:
patent: 1407401 (1922-02-01), Freeman et al.
patent: 1709124 (1929-04-01), Freeman et al.
patent: 3464477 (1969-09-01), Verdier
patent: 3542108 (1970-11-01), Rye et al.
patent: 3703203 (1972-11-01), Simpson
patent: 4321957 (1982-03-01), Hahn et al.
patent: 4790364 (1988-12-01), Lobb et al.
patent: 4813467 (1989-03-01), Hinkel et al.
patent: 5261474 (1993-11-01), Lobb et al.
Patent Abstracts of Japan, vol. 15, No. 89 (M-1088) 4 Mar. 1991 & JP-A-02 306-803 (Yokohama Tire & Rubber Co) Dec. 20, 1990.

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